January 2023

Blynk Gateway + Nodes


A Gateway device provides cellular connectivity for wireless or CAN Bus connected Nodes.   The Nodes collect sensor data and send it to the Gateway where it is posted to a cloud service.   All data in the cloud is then accessible via a iOS / Android map and a web dashboard (Blynk).  

 

Gateway

A small device (123 x 105 x 53 mm) with power input of 120 VAC / 12 to 24 VDC / Micro USB will be mounted within 1000 m / 3281 ft of all Nodes.   The device will use Blynk for cloud storage, online web dashboard, and iOS / Android smartphone app.   The mobile app will display what is being montitored and notifications may be configured to advise the user of the phone of particular changes in any input being monitored.   The mobile app and web dashboard may also remotely turn VAC / VDC components on/off via Remote Control Nodes.  

 

MCU Nodes

Various Nodes consist of a microcontroller for logic, GPIO, and transmission of data to the Gateway via wireless LoRa or CAN Bus.   The master list of data streams is shown in the table below.  

Master Data Stream Reference
Node Type Function Data Streams
On/Off Detection 120 VAC



12 to 24 VDC
Count of on/off changes
Time on in seconds
Time off in seconds

Count of on/off changes
Time on in seconds
Time off in seconds
Ambient Temperature
Humidity
Light
Noise
Air Quality
[time-at-level histogram & level-crossing events]
[time-at-level histogram & level-crossing events]
[time-at-level histogram & level-crossing events]
[time-at-level histogram & level-crossing events]
[time-at-level histogram & level-crossing events]
Motion PIR (2 to 5 m / 6 to 16 ft)
IR Break Beam (50 cm / 20 inches apart)
Laser Break Beam (6 m / 20 ft apart)
Count of events
Count of events
Connt of events

time-at-level histogram number of bins is fixed at #, with the ranges for each bin one-time user defined.   The time reported at each (bin) level will be in seconds.  

level-crossing events high/low thresholds are one-time user defined.  

 

On/Off Detection

 

Thermocouple

 

 

Under Development

 


Do you need help developing or customizing a IoT product for your needs?   Send me an email requesting a free one hour phone / web share consultation.  

 

The information presented on this website is for the author's use only.   Use of this information by anyone other than the author is offered as guidelines and non-professional advice only.   No liability is assumed by the author or this web site.  

Projects

January 2023

Gateway + Nodes


January 2023

Pre-Designed Solutions